Installation Guide

U.S.P.S. APPROVED
SALSBURY INDUSTRIES
1010 East 62
nd
Street, Los Angeles, CA 90001-1598
Ph: 1-800-624-5269 Int’l Ph: 323-846-6700
Fx: 1-800-624-5299 Int’l Fx:
323-846-6800
Installation instructions are provided as general guidelines. It is advised that a professional installer be consulted. Salsbury Industries assumes no product assembly or installation liability.
Copyright © 2009 Salsbury Industries. All rights reserved. (P/N 370137, Rev. 17, 9/23/09) Page 1 of 4
U.S.P.S. APPROVED
With its high-security design and quality construction, Salsbury’s 3700 series USPS approved 4C horizontal mailboxes will provide years of
maintenance free service. These units meet all the requirements of USPS-STD-4C, the new high-security standard developed by the United
States Postal Service.
Typical Installation
Preparatory Steps
1. Have mailboxes and instructions on hand before starting wall
construction.
2. Unpack and review contents of shipping cartons.
3. Gather tenant and parcel locker keys and store in a secure place.
4. Read installation instructions document thoroughly.
5. Determine rough opening size(s).
6. Determine rough opening location above finished floor.
7. Determine framing configuration and location.
8. Procure materials for wall construction.
Rough Opening Dimensions
Each unit requires a separate opening in the drywall. Each pair of
units will have a 2x4 stud separating them. The trim frames cannot
be butted together. There will be a space between edges of trim
frames of approximately ¾” when 2x4 studs with drywall separate the
mailboxes.
Calculation Of Space Required for Multiple Units
For overall width of mailbox installation, add all of the stud spacing
and subtract ¾”. For overall height of units, see the dimension chart
below.
Wall Construction
Particular attention must be paid to wall framing to provide a strong
and secure attachment of the mailbox units. Stud spacing must be
accurate to ensure that there is minimum space between the studs
and the mailbox frame and minimum mailbox frame distortion when
the fasteners are tightened between the frame and the studs. Studs
must be installed plumb and square to further ensure proper fit of the
mailboxes.
Dimensions – FRONT LOADING
WIDTHS 1 COLUMN 2 COLUMN
Overall 16-3/8” 31-1/8”
Rough Opening 15-5/8” 30-3/8”
Stud Spacing 17-1/8” 31-7/8”
HEIGHTS OVERALL ROUGH OPENING
Maximum Height 56-3/4” 56”
15 Doors High 55” 54-1/4”
13 Doors High 48” 47-1/4”
11 Doors High 41” 40-1/4”
9 Doors High 34” 33-1/4”
7 Doors High 27” 26-1/4”
5 Doors High 20” 19-1/4”
3 Doors High 13” 12-1/4”
4C Horizontal Mailboxes – 3700 Series
FRONT LOADING Installation Instructions
IMPORTANT !
After installing the unit, contact your local postmaster – the USPS will
provide and install its own master lock on your mailbox unit. Hardware
for installing the master lock is included in the plastic bag. Please
provide the hardware & these instructions to the USPS representative
when they arrive to install the lock.